Water-purifier for steam-boilers



(No Model.)

D. HANNA.

WATER PURIFIER FORASTBAM BOILERS. No. 306.606. I Patented 0013.14, 1884.

WITNESSES: Zy/ INVBNTQR fl/ ATTORNEYS N. PETERS. Pholuiflhugraphor. Wnshingwn. o. c.

UNITED STATES PATENT @rrrcn.

DAVID HANNA, OF OGDENSBURG, NEIV YORK.

WATER-PURIFIER FOR STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 306,606, dated October 14, 1884.

A pplication filed January 28, 1884. (No model.)

To all whom it may concern.-

Be it known that 1, DAVID HANNA, a citizen of the United States, and a resident of Ogdensburg, in the county of St. Lawrence and State of New York, have invented a certain new and useful Process of and Apparatus for Purifying the Feed-\Vater for Steam-Boilers; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to which my invention relates to use and make the same, reference being had to the accompanying drawings, which form a part of this specification, and in which Figure 1 is a side view of a portion of a steam-boiler, the shell being broken away in part to show the apparatus; and Fig. 2 is a vertical transverse section of the boiler through the steam dome, showing the apparatus at right angles to the view represented in Fig. 1.

Like letters of reference indicate corresponding parts in both the figures.

My invention has relation to means for purifying the water fed to steam-boilers or steam-generators, and it consists, first, in an improved process or method of separating the impurities from the feed-water; and, secondly,

' in an improved apparatus or device for effecting this object, substantially as will be hereinafter more fully described and claimed.

Reference being had to the accompanying drawings, A denotes a rose or spraying-nozzle, suitably secured at the lower end of the feedwater pipe B, which is provided with a stopcock, G, and may have an air-chamber, D, provided with a blow-off cock at the top. A funnel-shaped vessel or basin, E, is secured some distance below the spraying-nozzle, but above the waterline and within the steamspace of the boiler. This vessel has an outletpipe, F, at its lower end, which passes out of the boiler, and is also provided with an inside funnelshaped vessel or basin, G, which has an aperture at its lower end larger than the aperture or outlet in the outside vessel, E. The flaring upper edge of the inside vessel, G, projects above the top of the outside vessel, E, the two vessels E and G being connected by bolts H or other suitable means, so as to be fixed in their proper relative position, with the upper edge of the inner vessel extending outside of the limits of the spray. The outletpipe F has a stopcock, I, and is continued around the side of the boiler, opening into a sediment-receptacle, J, which has an outlet or blow-off pipe, K, provided with a stop-cock, L. A return-pipe, M, leads from the sedi ment-receptacle to the steam-space of the boiler, and is provided with a stopcock, N.

The operation of the apparatus is as follows: As the feedwater enters the steam-space of the boiler through the rose or spraying nozzle, the spray will, by the heat in the boiler, be converted into steam before it reaches the water already contained therein, separating the impurities and foreign matter from the feedwater, which impurities fall down into the funnel-shaped upper vessel, from the sides of which they slide down into the lower funnel and into the pipe F, which conveys them outside of the boiler to the receptacle J, the stopcock I being open. To blow off the sediment, the stopcock N in pipe M and L in pipe K are opened, while I is closed. The upper funnel-shaped vessel being placed within and above the lower funnel-shaped vessel, which is provided with the outlet or discharge pipe, causes the sediment to be conducted directly to the lowest point of the two vessels into the discharge-pipe; and if the boiler-is rocked or moved, as in the case of a marine boiler or locomotive-boiler, (especially on switchingengines, which are liable to frequent shocks and concussions,) the fluid sediment which may adhere to or settle upon the outside of the upper vessel will not be washed off into the water in the boiler, but will flow down into the lower vessel and be discharged through pipe F.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States-- 1. The process of separating the impurities from the feed-water for steam-boilers, which consists in injecting the water into the steamspace of the boiler in' the form of fine spray, vaporizing the spray before it reaches the water in the boiler, separating the impurities from the spray while being vaporized, collecting the impurities as they are separated from the spray, and conducting them outside of theboiler, substantially as described.

2. In a water-purifier for steam-boilers, the combination of a feed-water-spraying device arranged within the steam-space ol' the boiler, with a collecting vessel or basin having walls adapted to separate the contents of said vessel, and having an open top above high-water mark within the boiler, and a pipe leading from the vessel outside of the boiler, substantially as and for the purpose shown and set forth.

3. In a Water'purifier for steanrboilers, the combination of a feed-Water'spraying device arranged withinthe steam-space of the boiler a collecting vessel or basin having walls adapted to separate the contents of said vessel, and having an open top above high-water mark Within the boiler a pipe having a stop-cook "Witnesses:

FRANCIS E. DUANE, G-nonen B. SHEPARD. 

